Adobe Brick Instant

A ratio of 70% sand to 30% clay is generally considered ideal. Too much clay causes excessive cracking, while too much sand makes the bricks weak and prone to erosion.

The success of your bricks depends entirely on the soil's clay-to-sand ratio. adobe brick

Fill a glass jar 2/3 with soil and the rest with water. Shake for two minutes and let it settle overnight. The soil will settle into distinct layers: sand on the bottom and clay on top. A ratio of 70% sand to 30% clay